From Glossary of Meteorology
Revision as of 17:22, 25 April 2012 by imported>Perlwikibot
At any point on the earth's surface, the horizontal direction of the earth's magnetic lines of force (direction of a magnetic meridian) toward the north magnetic pole, that is, a direction indicated by the needle of a magnetic compass.
Because of the wide use of the magnetic compass, magnetic north, rather than true north, is the common 0° (or 360°) reference in much of navigational practice, including the designation of airport runway alignment.
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